Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1992-03-04
1993-04-13
Yasko, John D.
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
604195, A61M 500
Patent
active
052017109
ABSTRACT:
A syringe fitted with a clamping device for the needle and with means to enable the needle to be automatically retractable into the syringe body at the end of an injection comprises: outer and inner cylinders; openings at the ends of the outer cylinder; a third opening at an end of said inner cylinder; closing means for said third opening; a needle with a head; sealing means in said closing means; a first spring to push said needle against said closing means; a clamping device loaded by a second spring to maintain outward said syringe and to release said needle; a diaphragm in said closing means which bends before its breaking; a sharp element to break said diaphragm; closing means to prevent said needle from being reached and stopping means to prevent said second cylinder from being moved outward said syringe after its use.
REFERENCES:
patent: 4687467 (1987-08-01), Cygielski
patent: 4826491 (1989-05-01), Schramm
patent: 4994034 (1991-02-01), Botich
patent: 5000736 (1991-03-01), Kaufhold et al.
patent: 5049133 (1991-09-01), Villen Pascual
patent: 5053010 (1991-10-01), McGary et al.
patent: 5084018 (1992-01-01), Taso
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